Valves - Pressure Controls - Pressure Reducing Valve - Direct Acting

PR58-38

PRESSURE REDUCING/RELIEVING CARTRIDGE VALVE

Overview

Description

The pr58-38xxx is a screw in, cartridge style, direct acting, spool type, hydraulic pressure reducing/relieving valve with internal spring chamber drain, and spool damping chamber.

Operation

It is designed to act as a pressure regulating device for secondary circuits. In its steady state, the pr58-38xxx allows flow to pass bidirectionally from port 2 to port 1 with the spring chamber constantly drained at port 3. Upon attainment of a predetermined pressure at port 1, the cartridge shifts to block flow at port 2, thereby regulating pressure at port 1. In this mode, the valve will also relieve port 1 to port 3.. Port 2 may be protected by a 60 x 60 mesh screen.

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustments prohibit springs from going solid.
  • Optional spring ranges to 248 bar (4200 psi)
  • Optional 233 micron screen.
  • Hardened spool and cage for long life.
  • Compact, industry-common size.
Pressure Ratings
Pressure rating:
  • 344.7 bar (5000 psi)
  • 68.9 bar (1000 psi) Maximum tank port pressure
Proof pressure:
  • 379.2 bar (5500 psi)
Burst pressure:
  • 896.3 bar (13000 psi)
Flow Ratings
Flow rating:
  • 18.9 lpm (5 gpm)
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
  • -26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane and urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Fluids:
  • Mineral based or synthetic with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406 (tank port pressure is additive to pressure setting at ratio of 1:1)
Unit weight:
  • 0.23 kg (0.52 lb) A
  • 0.26 kg (0.57 lb) B
  • 0.28 kg (0.61 lb) C l
  • 0.22 kg (0.49 lb) F h
Internal wetted surface area:
  • 141 cm² (21.9 in²) A b c l
  • 166 cm² (25.7 in²) F h
PR58-38_Flow-Pressure(2022-02-24)
PR58-38_Dim(2022-02-24)
Cavity:
Cartridge installation torque:
  • 32.5 to 35.3 N-m (24 to 26 ft-lb)
  • 47.5 N-m (35 ft-lb) Maximum
Plug torque:
  • 47.5 N-m (25 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK08-3X-BM X = seal option
  • SK08-3U-OO X = seal option
PR58-38_Order(2022-02-24)

Model Options

PR58-38DFG-H-J-R/S
D Rapid Response Option
CODE
DESCRIPTION
BLANK
Standard
R
Rapid Response
F Adjustment Option
CODE
DESCRIPTION
A
1/4" Hex Allen Head
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock Knob
C
1/4" Hex Allen Head with Cover Cap
F
Factory Preset Non-Adjustable
H
Factory Preset Hidden Adjustment
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
G Screen
CODE
DESCRIPTION
BLANK
NONE
S
60 Mesh Screen
H Line Body
CODE
DESCRIPTION
0
No Body
4T
Aluminum SAE 4
6T
Aluminum SAE 6
6TD
Ductile Iron SAE 6
8TD
Ductile Iron SAE 8
3B
Aluminum BSPP 3/8" (3)
3BD
Ductile Iron BSPP 3/8" (3)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
05
10.3 to 37.9 bar (150 to 550 psi) Spring Range
20
34.5 to 141.3 bar (500 to 2050 psi) Spring Range
32
55.2 to 227.5 bar (800 to 3300 psi) Spring Range
42
227.6 to 289.6 bar (3301 to 4200 psi) Spring Range
S Setting
CODE
DESCRIPTION
MXXX
Spring Setting in XXX bar
XX
Spring Setting in XX psi (x 100)